A simple situation in which two parties come together and freely agree to an exchange is only prima facie ethically legitimate because:

Select one:

a. research studies prove that a simple exchange does not involve unethical situations.

b. certain conditions must be met before it can be concluded that autonomy has been respected and mutual benefit has been achieved.

c. it rejects the assumption that individuals are capable of pursuing their own ends.

d. it involves the consent of both parties involved and leaves no room for unethical acts.